I have a friend who has, give or take a couple, wrecked vehicles more than 20 times. Most were minor, barely involving damage to the vehicle he was driving or the vehicle/object he hit, but a couple were catastrophic. I think the majority were because he has roadway hypnosis/narcolepsy. I've had him fall asleep mid sentence talking to me when he was a passenger. A perfect candidate to have that license taken, right? The two ways I know of to take a license involve driving while intoxicated or a doctor personally notifying the licensing agency about a person's inability to drive. Believe it or not, most doctors have a vested interest (because they want clients) in not personally notifying the agency. However, there is no set path to revoke a license for simply being a bad driver.